259492879 has 4 divisors (see below), whose sum is σ = 274757184. Its totient is φ = 244228576.

The previous prime is 259492867. The next prime is 259492889. The reversal of 259492879 is 978294952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259492879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259492819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7632127 + ... + 7632160.

It is an arithmetic number, because the mean of its divisors is an integer number (68689296).

Almost surely, 2^259492879 is an apocalyptic number.

259492879 is a deficient number, since it is larger than the sum of its proper divisors (15264305).

259492879 is a wasteful number, since it uses less digits than its factorization.

259492879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15264304.

The product of its digits is 3265920, while the sum is 55.

The square root of 259492879 is about 16108.7826666077. The cubic root of 259492879 is about 637.8351980137.

The spelling of 259492879 in words is "two hundred fifty-nine million, four hundred ninety-two thousand, eight hundred seventy-nine".